How to get a text file to split by a string in different RichTextBoxes?

My Textfile looks like this:

(-*-)
textA1
textA2
textA3
(-*-)
textB1
textB2
textB3
(-*-)
textC1
...

Now i try to get the Textfile split up by the (-*-) string (<-it´s always this in the Textfile!) and show it in different richtextboxes. I use actually following Code...

Tried with datatable, stringbuilder, iList...

My Goal is to get all textA in richtextbox A, textB in richtextbox B and so on...

 private void öffnenToolStripMenuItem_Click(object sender, EventArgs e)
    {
        var seiten = new List<string>();

        if (oFDOpenDatei.ShowDialog() == DialogResult.OK)
        {                
            using (StreamReader sr = new StreamReader(oFDOpenDatei.FileName))
            {
                while (!sr.EndOfStream)
                {
                    string[] read = sr.ReadLine().Split(new string[] { "(-*-)" }, StringSplitOptions.None);

                    for (int i = 0; i < read.Length; i++)
                    {
                        seiten.Add(Convert.ToString(read));
                    }

                    //foreach (var item in read)
                    //{
                    //    seiten.Add(Convert.ToString(item));
                    //}
                }
                sr.Close();
            }

            rTBA.Text = seiten[0][0].ToString();
            rTBB.Text = seiten[1][0].ToString();
        }
    }

-the activ "for" statment shows a "S" in both richtboxes ... for whatever reason :))

-the foreach says out of index, but when i check the array.lenght, it shows me 1 at A and 2 at B ... not more

can someone please get me on the right track!?

Solution

First of all, it looks like you want your list to contain array-of-string elements, not string elements. In this case, it should be of type List<string[]>.

Second, when you use ReadLine(), it returns only one line. If you wish to split based on a specific line, you need to read multiple lines.

Here's an easy solution with LINQ:

var seiten = new List<string[]>();
var allLines = File.ReadAllLines(oFDOpenDatei.FileName);

int consumedLines = 0;
while (consumedLines < allLines.Length)
{
    var group = allLines.Skip(consumedLines).TakeWhile(s => s != "(-*-)").ToArray();
    if (group.Any()) seiten.Add(group);
    consumedLines += group.Length + 1;
}

If you don't need access to individual lines of the same group, then you can still use a List<string> and adjust the above code to something like this:

var seiten = new List<string>();
var allLines = File.ReadAllLines(oFDOpenDatei.FileName);

int consumedLines = 0;
while (consumedLines < allLines.Length)
{
    var group = allLines.Skip(consumedLines).TakeWhile(s => s != "(-*-)").ToArray();
    if (group.Any()) seiten.Add(string.Join(Environment.NewLine, group));
    consumedLines += group.Length + 1;
}

rTBA.Text = seiten[0];
rTBB.Text = seiten[1];

How to get a text file to split by a string in different RichTextBoxes?

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